Extra extra Large Fortnum and Mason Wicker Hamper Basket.
This is the biggest I have found online, you can check the dimensions to compare to others.
It is a very old F&M basket, so is more vintage and therefore has signs that come with it's age but still in working order.
I have cleaned it as best I can, as it has been sitting around unused for many years.
Ideal for creating your own hamper, toy box, storage, or a log basket.
I have another F&M hamper that is slightly smaller if that is what you are looking 56×39×40cm. Feel free to check my listings.